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linchpin

noun linch·pin \ˈlinch-ˌpin\

Simple Definition of linchpin

  • : a person or thing that holds something together : the most important part of a complex situation or system

Full Definition of linchpin

  1. 1 :  a locking pin inserted crosswise (as through the end of an axle or shaft)

  2. 2 :  one that serves to hold together parts or elements that exist or function as a unit <the linchpin in the defense's case>

Examples of linchpin

  1. This witness is the linchpin of the defense's case.



Variants of linchpin

also lynch·pin \ˈlinch-ˌpin\

Origin of linchpin

Middle English lynspin, from lyns linchpin (from Old English lynis) + pin; akin to Middle High German luns linchpin


First Known Use: 13th century

Other Mechanical Engineering Terms


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